MailCatch Firefox Addon

MailCatch is available directly from your Firefox browser. It is a non-intrusive addon, which
simply adds an entry to the right-click context menu. No space-taking toolbar!
You can download it simply from here or from Mozilla Addons repository here.
How to use:

Right click in the email field of a registration form

Select "Mailcatch: Insert Random Email"

Submit the form

Right click anywhere and select "Mailcatch: Last User Emails", your email should appear there

Click on "Check inbox"

A new tab opens with the inbox

That's it, it cannot be any faster! No toolbar to take up screen estate, no registration, no tracking.

Check inbox

Random address

You can use any address you want, but in case you can't think of a good cryptic one, here is a random one: